Here's an alternative way of writing the function that might be clearer.
SV* new(const char * classname, const char * name, const char * rank,
+long serial) {
Soldier * soldier;
SV * obj;
SV * obj_ref;
New(42, soldier, 1, Soldier);
soldier->name = savepv(name);
soldier->rank = savepv(rank);
soldier->serial = serial;
obj = newSViv((IV)soldier);
obj_ref = newRV_noinc(obj);
sv_bless(obj_ref, gv_stashpv(classname, GV_ADD));
SvREADONLY_on(obj);
return obj_ref; // Inline will mortalize.
}
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